Dimmable Tai-Chi style dual-color COB

Abstract

The invention relates to a dimmable Tai-Chi style dual-color COB, which includes a substrate, an LED chip fixed on the substrate, positive and negative soldering lugs electrically connected with the LED chip, and a phosphor layer applied to the LED chip. The dimmable Tai-Chi style dual-color COB is characterized in that the LED chip is arranged into a circular illumination area on the substrate, and the circular illumination area is surrounded by an annular dam; a curved dam is arranged in the illumination area to divide the illumination area into a Tai-Chi style; and the illumination area isdivided into two blocks which are a C region and a W region respectively, wherein the C region and the W region have different color temperatures, the area of the C region and the area of the W regionare the same, and the power of the LED chip in the C region is equal to that of the LED chip in the W region. The dark area of illumination can be eliminated. Color mixing can be more uniform. The lighting effect is better. A wider color range is achieved.

Description

technical field [0001] The invention relates to the technical field of LED lighting, in particular to a two-color COB with a dimmable Tai Chi shape. technical background [0002] COB light source is also called LED integrated light source. It arranges multiple LED chips in an array and directly sticks them on a substrate. The pad is connected to the power supply; with the development of society, the market has more and more stringent requirements for the photoelectric parameters such as the color consistency of the adjustable multi-color light source and the stable light surface, so as to meet the needs of various environments; such as figure 1 The existing COB light source shown is usually an outer ring and an inner ring surrounded by LED chips on the substrate. The color temperature of the inner and outer rings is different, and the color temperature can be adjusted by adjusting the brightness of the inner ring and the outer ring. When it is not bright, a dark area will b...

AI Technical Summary

Problems solved by technology

[0002] COB light source is also called LED integrated light source. It arranges multiple LED chips in an array and directly sticks them on a substrate. The pad is connected to the power supply; with the development of society, the market has more and more stringent requirements for the photoelectric parameters such as the color consistency of the adjustable multi-color light source and the stable light surface, so as to meet the needs of various environments; such as figure 1 The existing COB light source shown is usually an outer ring and an inner ring surrounded by LED chips on the substrate. The color temperature of the inner and outer rings is different, and the color temperature can be adjusted by adjusting the brightness of the inner ring and the outer ring. When it is not bright, a dark area will be formed, resulting in uneven brightness of the light spot emitted by the lamp

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